Machine



(No Model.) 3 Sheets-Sheet 1.

A. WARTH. CLOTH CUTTING MACHINE;

No. 380,968. Patented Apr. 10, 1888.

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4A. WARTH: CLOTH CUTTING MACHINE.

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(NoModeL) 3 Sheets-Sheet 3.

A. WARTH.

CLOTH CUTTING MACHINE.

No. 380,963. PatentedApr. 10. 1888.

W/T/VESSES: MENTOR. \fl. By .fllb m -Wkflih I In; ATTORNEYS,

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Unirnn STATES ALBIN VVARTH, OF STAPLETON, NE\V YORK.

CLOTH-CUTTING MACHINE.

CPECIEICATION forming part of Letters Patent No. 380.9 13. dated April l 1888.

Application filed November 12, 1887. Serial No.255,005. (No model.)

To aZZ whom it may concern.-

Be it known that I, ALBIN WARIH, a citizen of the United States, residing at Stapleton, in the county of Richmond and State of New York, haveinvented new and useful Improvements in Machines for Cutting Textile and other Materials, of which the following is a specification.

This invention relates to certain improvements in that class of machines which I have described in LettersPatent N 0151,4565, granted to me May 26, 1874.; also, in Letters Patent No. 165,636, dated July 13, 1875, and in Letters Patent N 0. 363,705, dated May 24, 1887 and it consists in certain novel combinations of partshereinafter fully described and pointed out in the claims, and illustrated in the accompanying drawings, in which Figure 1 represents a side elevation, partly in section. Fig. 2 is a horizontal section in the plane x m, Fig. 1. Figs. 3 and 4. are details,whieh will be referred to as the description progresses. Fig. 5 is a sectional side elevation of a modification. Fig. 6 is aihorizontal section in the plane 3 y, Fig. 5. Fig. 7 is a detached side elevation of the lever and balance-weight. Fig. 8 is a sectional side view of the pillar and sleeve on a larger scale than the previous figures. Fig. 9 is a vertical section of the pillar, the kni'feloar, and the sleeve in the plane 2 z, Fig. 10. Fig. 10 is a transverse section in the plane a m, Fig. 8. Fig. 11 is a similar section in the plane yy', Fig. 9. Fig. 12 is a perspective view of an adjustable bearing which is secured to one of the lugs of the knife-bar and acts upon the sleeve.

Similar letters indicate corresponding parts.

In the drawings, the letter A designates the foot plate, from which rises a standard or pillar, B, the upper portion of which is round and made to extend through eyes a a, formed on a bracket, 0, which is secured to the outer end of an arm, G.

Into the interior of the pillar is fitted the knife-bar D,which is provided with two lugs, b b, which extend beyond the surface of the pillar, and between these lugs is placed the sleeve E, which fits the pillar, so that said pillar, together with the knifebar, can be easily turned round in the sleeve, While the sleeve can be freely moved up and down on the pillar. By moving the sleeve up and down a reciprocating motion is imparted to the knifebar D, and the knife is caused to cut through the material situated upon the foot-plate A.

This footplate rests loosely upon a table, and' it can be freely turned and moved on the table. as is well known to those conversant with the construction of my cutting-machines.

hen it is taken into consideration that the movement of the knife bar is very rapid, (from fifteen hundred to two thousand strokes per minute,) it will be readily understood that during the rapid operation of my machines the footplate is liable to jump and to tremble, so that it is very difficult to keep the knife exactly on the line of the pattern, and one of the objects of my present invention is to reduce this jumping and trembling motion as much as possible. With this object in view the mechanism forimparting to the sleeve E and knife-bar D the required reciprocating motion is constructed as follows: In the arm 0 is mounted a double-armed lever, F G, which swings on the pivot c, and one arm, F, of which engages with the sleeve E, while its other arm, G, is attached to one end of the connectingrod H, the other end of which connects with a crank or eccentric, I, secured to the'transverse arbor J. In the example shown in Figs. 1 and 2 this arbor is situated approximately in the same vertical plane with the rear end of the arm G of the double-armed lever F G, so that the weight of the connecting-rod H to some extent counterbalances the weight of the sleeve E and the knife-bar D, and I am enabled to run my machine with very great speed without causing a trembling or jumping action; but in order to produce as near as possible a perfect balance I have secured tothe lever 'F G a weight, K, so that when the machine is in motion the momentum of the parts carried by the arm F of the double-armed lever is counteracted by the momentum of the weight K and the parts secured to the arm G of said double-armed lever. In the example shown in Figs. 5 and 6tl1e double'armed lever F G is made in the form ofa bell-crank lever,-

and the connecting-rod H extends from the arm G of said lever in an approximately horizontal position to the eccentric wrist-pin J on the shaft I. In this case the weight of the connectingrod does not assist in counterbalancing the weight of the sleeve and the knifebar, and when the ma hine is in motion the momentum of these parts is balanced solely by the weight K.

In running my machines very rapidly I have also found that in the course of time the sleeve E is liable to wear, so that it begins to move unsteady upon the pillar B. In orderto coinpensate for such wear, I have provided the sleeve E with openings 0 0, Figs. 9 and 10, in which are placed blocks ff. These blocks are made of any suitable materialsuch as brass or Babbitt 1netaland they are held in contact with the pillar B by a spring, 9, the tension of which can be adjusted by a not, It, fitted upon a screw stud, i, which extends from the sleeve E. I have also found that the lugs 12 b,which project from theknife-bar D and straddle the sleeve E, are liable to wear, and if they fail to hug the sleeve closely a rattling noise is produced when the machine is in motion. To prevent this, I have provided one of said lugs b with a bearing, k, Fig. 12, the bottom plate, 7c, of which is made in the form of a segment, and which is secured to the lug b by a screw, l, passing through a slot, Z, so thatif any wearing takes place said bearing can be adjusted in the proper relation to the sleeve.

What I claim as new, and desire to secure by Letters Patent, is

1. The combinatiomwith the movable footplate A, the pillar B, the knife-bar D, fitted into the pillar, and the sleeve E, fitted on the pillar and made to engage the knife-bar. of a double-armed lever made to engagethe sleeve, a weight connected to said lever and having a reciprocating movement in a direction opposite to that of the knife-bar, and mechanism, substantially as described, for imparting motion to the double-armed lever.

2. The combination, with the movable footplate A, the pillar B, the knife-bar D, fitted ported friction-blocks f f, placed into openings in the sleeve and bearing upon the pillar, and means for adjusting the tension of said friction-blocks, substantially as described.

4. The combination, with the foot-plate A, the pillar B, the knife-bar D, fitted into the pillar, and the sleeve E, fitting on the pillar and engaging the knife-bar, of friction-blocksffi placed into openings in the sleeve and bearing upon the pillar, a spring, 9, acting on said blocks, and screw-stud i and a nut, h, for adjusting the tension of said spring, substantially as described.

5. The combination, with the foot-plate A, the pillar B, the sleeve E, fitted on the pillar, the knife-bar D, fitted into the pillar, and the lugs b b, extending from the knife-bar and straddling the sleeve, of an adjustable bearing, k, fitted on one of the lugs b, substantially as described.

In testimony whereof Ihave hereunto set my 7 hand and seal in the presence of two subscribing witnesses.

ALBIN WARTH. [L. s.]

Witnesses:

W. O. HAUFF, E. F. KASTENHUBER. 

